I can recommend this apartment for everyone who's looking for an authentic but also comfortable stay in Bangkok.
The hosts are very nice and helpful with any kind of issues, the check in was very easy and without any complications.
The apartment itself is clean and provides everything you need, even for a longer stay (e.g. washing machine, fridge, etc.). The view is absolutely stunning from the 38th. Floor. The pool is great and the gym has everything you need, a bit smaller than expected but it's for free! :)
There is a 7-11 store right at the entrance of the building, a shopping mall with food market and restaurants right next to it and a free shuttle which takes you to the nearest train station and bigger shopping center (but you could also walk 5-10min)
10/10 would stay there again